Swedish wireless-networks equipment maker Ericsson went sharply against the downward trend, jumping 5.9% to 6.25 Swedish kronor in Stockholm after the company named Carl-Henric Svanberg as chief executive, replacing Kurt Hellstroem, who will retire. Mr. Svanberg is presently the boss of lock maker Assa Abloy, whose shares sank 14.6% to 76 kronor on the news.